FCV587 interference

S

spooled1

New member
Gidday,
Attached is a recent pic showing the boat underway at about 10km/h in a depth of about 95m. I then stopped the boat and drifted over an active school.

Can I please get an explanation for the vertical lines - Yes! I know the gain was set pretty high but what do these lines actually represent? Like, what's the electronic brain actually processing here? Is it TX Rate thing, TVG, TX Power.
Cheers
 

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Spooled1,
Thanks for the screen shot. I noticed that the sounder is showing your voltage at 15V. That's high for a 12V system. I would be curious if those lines are still there when your engine(s) are off.

Snips
 
Spooled1,
I also noticed that on the left side of the display that you have no bottom being displayed in with the noise. How it your transducer mounted?

Snips
 
Gidday Snips,

The P66 transducer is transom mounted on a slider bar on a 5m alloy boat. If it's set the tranny too high while underway I don't get a reading - Like you can see. Too low and I get a massive rooster tail while in transit. The transducer was probably set too high when I captured the screen coz I hunted the fish down earlier in the day and by that point I only really needed it for referencing fish on the drift.

When I fish that depth, I generally try to keep the motor switched off while on the drift but sometimes I'll be reversing occasionally to tackle the currents.

13.8-15v readings are very common on my boat. It's a brand new single 12v battery but even the previous battery got these levels. Aside from VHF Radio, engine keystart and a seperate GPS, that's all the electronics connected. The entire vessel and all equipment runs off that single battery.
 
Spooled1,
Can you confirm that type of noise doesn't appear at the dock?

Snips
 
Gidday Snips,
My boat is never docked. It's a trailer boat that I launch through a surf beach.
Yesterday I fished again in around 90 metres, same thing:
15v; heaps of interference. When my mail server starts working again I'll post a pic from yesterday.
Cheers,
Dan
 
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